MATERIALS REQUIRED MATERIALS PROVIDED H. pylori Ag MonlabTest® BUT NO PROVIDED - 25 Tests - Specimen collection container - Instruction for use - Disposable gloves MO-804001 25 TESTS - 25 specimen collection vial - Timer One step test to detect H. pylori antigens in human feces with buffer A rapid, one step test for the qualitative detection of Helicobacter SPECIMEN COLLECTION AND PREPARATION pylori (H. pylori ) antigens in human feces. Collect sufficient quantity of feces (1-2 g or mL for liquid sample). For professional in vitro diagnostic use only. Stool samples should be collected in clean and dry containers (no INTENDED USE preservatives or transport media). The undiluted samples can be stored, for 1 year, in the refrigerator The H. pylori Ag MonlabTest® is a rapid chromatographic (2-8ºC/36-46.4ºF) or frozen at -20ºC/-4ºF. It is recommended to immunoassay for the qualitative detection of H. pylori antigens in freeze for longer storage. In this case, the sample will be totally human feces specimens to aid in the diagnosis of H. pylori infection. thawed, and brought to room temperature before testing. The diluted samples with buffer can be stored for 1 week at room SYNTHESIS temperature (approx. 21ºC/70ºF) or in the refrigerator (2-8ºC/36- 46.4ºF). It is recommended that wherever possible, keeping samples Helicobacter pylori (H. pylori ) is a small, spiral-shaped bacterium that refrigerated. is found in the surface of the stomach (epithelial lining) and duodenum (mucous layer). H. pylori causes duodenal ulcers and gastric ulcers. PROCEDURES The importance of Helicobacter pylori testing has increased greatly To process the collected stool samples (see illustration 1): since the strong correlation between the presence of bacteria and Use a separate specimen collection vial for each sample. Unscrew confirmed gastrointestinal diseases (stomach and duodenum) like the cap of the vial and introduce the stick, only the part of the gastritis, peptic ulcer disease and gastric carcinoma. Invasive and propeller and as vertical as possible, four times into the same faecal non-invasive methods are used to diagnosis H. pylori infection in specimen to pick up quite a lot of sample (approx. 50 mg). Close the patients with symptoms of gastrointestinal disease. vial with the buffer and stool sample. Shake the vial in order to assure good sample dispersion. For liquid stool samples, aspirate the faecal specimen with a dropper and add 125µL into the PRINCIPLE specimen collection vial with buffer. The H. pylori Ag MonlabTest® is a qualitative lateral flow Test Procedure (see illustration 2) immunoassay for the detection of Helicobacter pylori antigen in Allow the tests, stool samples and buffer to reach to room human feces samples. The membrane is pre-coated with temperature (15-30ºC) prior to testing. Do not open pouches until monoclonal and polyclonal antibodies against H. pylori antigens on ready to perform the assay. the test line region. During testing, the sample reacts with the 1. Remove the H. pylori Ag MonlabTest® from its sealed pouch and particle coated with anti-H. pylori antibodies which was pre-dried use it as soon as possible. on the test strip. The mixture moves upward on the membrane by 2. Shake the specimen collection vial to assure good sample capillary action. In the case of a positive result the specific dispersion. Break off the tip of the vial. antibodies present on the membrane will react with the mixture 3. Use a separate device for each sample. Dispense exactly 3 drops conjugate and generate a coloured line. A green coloured band into the specimen well (S). Start the timer. always appears in the control line and serves as verification that 4. Read the result at 10 minutes after dispensing the sample. sufficient volume was added, that proper flow was obtained and as Illustration 1 an internal control for the reagents. Pick up the sample Mix the sample with buffer PRECAUTIONS - For professional in vitro diagnostic use only. - Do not use after expiration date. - The test should remain in the sealed pouch until use. - Do not use the test if pouch is damaged. - Follow Good Laboratory Practices, wear protective clothing, use H FECES Approx. 50mg Break the tip disposal gloves, do not eat, drink or smoke in the area. Illustration 2 - All the specimens should be considered potentially hazardous and handled in the same manner as an infectious agent. - The test should be discarded in a proper biohazard container after testing. 3 drops of the mixture “sample + buffer” - The test must be carried out within 2 hours of opening the sealed bag. STORAGE AND STABILITY Store as packaged in the sealed pouch either at refrigerated or room temperature (2-30ºC). The test is stable through the expiration date printed on the sealed pouch. The test must remain in the sealed pouch until use. Do not freeze. Ref: MO-804001 Manufacturer: Monlab SL Selva de Mar 48 08019 Barcelona Spain +34 93 433 58 60 Fax +34 93 436 38 94 [email protected] www.monlab.com Revision: January 2019 INTERPRETATION OF RESULTS PERFORMANCE CHARACTERISTICS Illustration 3 Detection limit The range for the detection limit values for H. pylori Ag MonlabTest ® is between 0.78-0.09 ng/mL of H. pylori recombinant POSITIVE NEGATIVE INVALID INVALID outer membrane protein. POSITIVE: Two lines appear across the central window, in the Sensitivity and Specificity result line region (a red test line marked with the letter T) and in the It was performed an evaluation using H. pylori Ag MonlabTest® control line region (a green control line marked with the letter C). with specimens obtained from patients with the same as H. pylori NEGATIVE: Only one band appears across the control line region infection symptoms and from asymptomatic individuals. The H. marked with the letter C (control line). pylori Ag MonlabTest® was evaluated compared with a commercial qPCR kit (Helicobacter pylori Real Time Detection Kit). INVALID : A total absence of the control coloured band regardless the appearance or not of the test line. Note: Insufficient specimen qPCR: Helicobacter pylori Real Time Detection volume, incorrect procedural techniques or deterioration of the kit reagents are the most likely reasons for control line failure. Review + - Total the procedure and repeat the test with a new test. If the problem IC test: H. pylori + 54 1 55 persists, discontinue using the test kit and contact your local Ag MonlabTest® - 1 60 61 distributor. Total 55 61 116 NOTES ON THE INTERPREATION OF RESULTS H. pylori Ag MonlabTest® vs Helicobacter pylori Real Time PCR Detection Kit The intensity of the red coloured band in the result line region (T) 95% CI will vary depending on the concentration of antigens in the (Confidence interval) specimen. However, neither the quantitative value, nor the rate of Sensitivity 98.2% 90.3%-100.0% increase in antigens can be determined by this qualitative test. Specificity 98.4% 91.2%-100.0% PPV 98.2% 90.3% -100.0% NPV 98.4% 91.2% -100.0% QUALITY CONTROL Internal procedural controls are included in the test: Cross-Reactivity - A green line appearing in the control line region (C). It confirms It was performed an evaluation to determine the cross reactivity of sufficient specimen volume and correct procedural technique. H. pylori Ag MonlabTest®. There is not cross reactivity with common intestinal pathogens, other organisms and substances LIMITATIONS occasionally present in feces. 1. H. pylori Ag MonlabTest® will only indicate the presence of H. Adenovirus Ig G bovina (immunoglobulinas) pylori in the specimen (qualitative detection) and should be used Campylobacter coli/jejuni Listeria monocytogenes for the detection of H. pylori antigens in feces specimens only. Salmonella enteritidis/ Neither the quantitative value nor the rate of increase in H. pylori Clostridium difficile paratyphi/typhi/typhimurium antigens concentration can be determined by this test. Shigella boydii Escherichia coli O157:H7 2. An excess of sample could cause wrong results (brown bands /dysenteriae/flexneri/sonnei appear). Dilute the sample with the buffer and repeat the test. Giardia lamblia Staphylococcus aureus 3. Some stool samples can decrease the intensity of the control line. HCG hormona (Human Yersinia enterocolitica 4. If the test result is negative and clinical symptoms persist, Chorionic Gonadotropin) additional testing using other clinical methods is recommended. Hemoglobina humana A negative result does not at any time preclude the possibility of H. pylori infection. REFERENCES 5. This test provides a presumptive diagnosis of H. pylori infections. 1- Cutler AF. Testing for Helicobacter pylori in clinical practice. Am j. All results must be interpreted together with other clinical Med. 1996; 100:35S-41S information and laboratory findings available to the physician. 2- Soll, AH. Pathogenesis of pectic ulcer and implications for 6. Mucous and/or bloody stool samples could cause non-specific theraphy. New England J. Med. (1990), 322: 909-16. reactions in the test. Mucous and/or bloody stool samples whose 3- Martin J. Blaser . Helicobacter pylori and gastric diseases . BMJ; 316 : result is positive should be followed up with other techniques to 1507-1510 (1998). confirm the result. EXPECTED VALUES SYMBOLS FOR IVD COMPONENTS AND REAGENTS For i n vitro diagnostic Studies have found that more than 90% of patients with duodenal Manufacturer ulcer and 80% of patients with gastric ulcer are infected with H. use only pylori . The H. pylori Ag MonlabTest® has been compared with Don’t re-use Consult instructions different methods: cultures, Urea Breath Test and Urease Test, for use demonstrating an overall accuracy of >92%. Contains sufficient for Keep dry n <n> tests Catalogue Code Temperature limitation Lot Number Use by Ref: MO-804001 Manufacturer: Monlab SL Selva de Mar 48 08019 Barcelona Spain +34 93 433 58 60 Fax +34 93 436 38 94 [email protected] www.monlab.com Revision: January 2019 .